Controlling device for sewing-machines.



E. C. BASSETT. CONTROLLING DEVICE FOR SEWING MACHINES.

APPLICATION FILED APR. I4" I9I5.

M .u w w 8 W. s I. 0 8B w n V m me d a w 1 E FilIJT/ Efl G. EASSE'E'LY, F 'IKEILTOIT, MAQSAGHUSETTS, ASSIGNOR TO THE EEEGE BUZCTGN RULE I'vi'iiCI-EINE QGIVIPAEIY, 9F IBQSTQN, IJIASFsACHUSETTS, .55. GQRPORATIGH 0E MAINE.

GGEWEFIRQX KN?- IJIEVICE F91, SEW'INGMAGI-IINZE5S.

Pcitciuteol July 2E9, ilgftia Application filer} April is, 1915. Seria1No.21,439.

To all whom it may concern:

a citizen of the United States, residing at Milton, county of Norfolk, State of Messachusetts, have invented on he provenient in Cont oiling Eevices for Sewing lclcchiiies, of which the following description, in co r nection with the accompanying drawing, is it specification, like characters on the drawing; representing like parts.

relates This invention to controlling mechanism for controlling the starting and stopp g of a machine enci particularly to mechanism which is iictuatecl by ii trecclle litany machines such as powecactuotcd machines are provided with clutch or a belt shifter or other eqiuveieut "cos for connecting the power to the ri (1' connecting it therefrom, which crutch or bcit shifter is actuated from a treudle, the construction being such that when the treaclle is roovecl in one cl: cities or llpressed the clutch or belt shifter actuated. to operotively connect the driving elemerit to tile machine. -..7iu i1y clevices of this uni re are so constructecl the" is. order t keep the driving elem clutched to the m chine it is necessary for the operetcr to maintain the treodlc iiepressecl, soon us the pressure is released from the treedle the clutch or belt i csllj/ actuated, to (lisc moot from the machine.

liiy present invention role trolling mechanism in which the sli element controlling the clutch other clutching means becomes automatr cullv locked in its-operative position Wlrfill. tbe treaclle is depressed to connect the element to the machine thereby el operator of the duty of rusm'l icing toe on the i'zreeclle in order to muin- (iriviug corinectlir between the drivelcineut our" line, and also to orwicie a reby the r ck .lc when it is may be re;

to our the Illa shown is such in one one tioi men into opera Ave poi. roe, in l tiou becomes automatically llocu i'flG'YQIYiGIZlt of the treufile ill the oppoE-uc i i? 703 131 element iuctviu herein the trcutlle utciiiiig elerection will, automatically disengage the lock thereby allowing the clutching element to be rele e My lIF-Jcilf. .11 is capable of use in connection with any machine and also might be used in connection with various types of clutcliingclements Whether such clutching elements are in the nature of friction clutches or belt shifters, or have ony'otlier usual construction for clutching or counecting a driving element to a driven element.

In order to give an understanding of my invention 1 have illustraterl in the drawiugs a selected embodiment thereof Which will now be described, after which the novel features will be pointed out in the appended claims.

Figure 1 is a View showing at controlling mechanism. embodying my invention; Fig, 2 is View showing the device'locked in its opcrative position; Fig. 3 is e section on the line -55, Fig. 2.

Inasmuch as the invention relates to the .otive and is cepable of use with a great variety of machines, I have not illustrated herein any particular machine, but have merely shown at 1 the portion of the frame Work of oi machine with which my improvement is usecl .2 designates c sliittable element by the movcmen't' of which the driving or power element is clutched or opercti iely conneetecl to the driven element of the machine 1. This sliiftable element 2 may be in the form of a. belt shifter for shifting" a driving belt from a loose to a fast pulley and vice-verso, orit umy be a, clutch-controlling element by the movement of which a driving element is clutclienl to the driven element.

Inasmuch as the invention is capable of use with any of the ordinary clutch mechanisms or belt-shifting devices, I have not thought it necessary to illustrate any par-- ticular clutch mechanism herein, but have confined the illustration to the shiftable ele merit by which thebelt shifter or clutch actuated. This shiftable element 2 is shown as acted. upon by automatically-operutii'e means herein illustrated as a spring 3 by *iiicli it is normally moved into and re tuinl i. in its inoperative position with the clutch or colt shifter disengaged. Movement oi the shiftcble element 2 to the left,

be e me necamg; 4.. am

s'vemeniz 0f the lever-x2; (1

fat

Hole eigmenis ham 1 [The win cause n 8 "sh-era; ment 10 5 mm y thmu l f will engagu he drui'v KEYED";

he awn-e 51 610 F n I Ava 1mm ms cpaa'aiwa p0- 1163 auto -121 men; 2 mam; (a such e 1 2w 11mm 8 6% no se a d0 an agalmt menace threaded into a bracket 23 carried by the ingiy connected to the treadlc so to provide a certain resiliency 1n the connection. The lower end of the connection '2' is provided with a ball-shaped head 28 which sets into a socket in an arm 29 extended from the treadie,. and spring 30 is situated between said arm and a collar 31 adj ustably mounted on the connection 7/ Whilell have herein illustrated a selected i embodiment of my invention 1 do not wish v to be limited to the constructional feature shown,

I claim:

1. In a contioliing'devicc, the combine tion with a shiftable element, of automatically-operative means to shift said element into one position, an actuator by which the element is shifted into another position, a lock for automatically locking said actuator in its operative position, a treadie, and connections between said treadle and actuator and lock. whereby movement of the-treadle in one direction shifts the actuator into its operative position and movement of the trcadle in the other direction releases the lock.

2. In a device of the class described, the combination with'a shiftahie element, of auto1natically-operative means to shift it into one position, an actuator by which said element is shlited into another position against the action of said automatically-operative means, a treadle connected to said'act'uator by which it is operated, means to lock said actuator in its operative position, and means whereby said lock can,be released by move-i ment of the treadle.

3. In adevice oi. the class described, the combination with aspring-actuated shiftable eicment, of an actuator by which said element is shifted against the action of the spring an automatically-operative lock to lock said actuator in its operative position,

' a manually-operated device, and connections between. said manually-operated device and actuator and lock whereby movement of said device in one direction will move the actuator into position to be locked and movement in the opposite direction will release the 'iock.

4. In a device of the class described, the combination with a spring-actuated shift able element, of a pivoted actuator by which said element is moved against the action of the spring, a locking dog carried by said actuator, a treadle, and a connection between tilt said treadle and actuator and dog whereby movement of the trcadle in onedirection opcrates the actuator and movement in the opposite direction releases the do. i

In testimony name to this specification.

ELMER C. BASSETT;

whereof, I have signed my 

